Truck



Feb. 25, 1930. J. M. ROHLFING TRUCK 2 Sheets-Sheet Original Filed Dec. l5, 1925 Feb. 25, 1930. J. M. ROHLFING 1,748,147

TRUCK Original Filed Dec. l5, 1925 2 sheets-sheet 2 llllllll mill N Patented' Feb. 2s, 1930 l ifuNiTED STATES lPATEN'I lorricu JOHN' M. B-ILFING, OF PLAINFIELD, JERSEY, ASSIGNOR TO AMERICAN CABAND `1*""0U'lSFfDIR'Y'('IOIMPBTY, 01'1 NEW YORK, N. Y., A CORPORATON OF NEW JERSEY OrignLapplication led December 15, 1923, Serial No. 680,880, nowlatent No. 1,699,544, dated January 2.2, 1929. Divided and this yaplilication led June 22, `1928. Serial No. 287,585.

i vkThis in,ventioiirelates. generally to `portable elevators and has particular referenceto an improved: supporting .carriage .ortrucktherewfor.A

i l@ne obj ect thisinvention is the provision o-fastrong and .durable carriage for support .ing vtheframe of a portable elevator.

Another object of theinvention is the provision Aofna truck Yformed of asingle cas/ting and having .a driving fmeanstherefor. y

f further. object. 'of the .invention is the provision y.of a truck for the abovespeciied purposevvhich easy .and .inexpensive to fmanufacture andstr'ongfand durable in operation. u yA stilliurther objectief the invention is the provision of a truck or Vcarriage "for supportlapplication` is a division.

ingan'e'levator of thetypefshown in my colpending applicationifor patenten movable lplatrorm,Serial No, 680,880, filed December '15, 1923, vvhichis `novv Patent No.f1,'699,544,

dated January 22, 1929, of ywhich the present .Qthe'r fobjects andadvantages of this ventionvvill be app arent vfrom the following description', taken conjunction With vthe v 2 accompanying drawings', i in which r jFigure Alisa side elevation of theloxver end v' lof an: elevator showing the truck of the presvent invention Y Y Fig. -2'is an end vieivofthe device shownin Fig. 1;k ff

Bjisfa top lplan vievvof the truck of the i ypresen,tfiirivention,the vien/.being .taken onthe also vline Bv-Blof Fig. 1.;

v. tig. 4isfa sectional vievvk on the line 4.-4

Figf. isr a sectional vievvjon-the line`5-'-5 .l elferringnovv more .particularly to the drawings, in Which similar characters ofre'ference' designate similar Vparts in the several v1evvs,'the jfrai'nefof the yportable elevator vis -indiatedfgenerally at -A,"the same'nbeing sup, ported"on atruck'indicatedgenerally at B and Which comprises a'unitary iframe formed spaeed'topand'bottom'members-2 and 4 reate points b y the vertical members 6. :For

sho'vvn in Fig. 4.

convenience, I have designated the truck as comprising a Lcentral portion C and the end portions'l).v The top member 2 inclines down- Wardly'at each end of the central portion C asshovvn at '8, and said ends are extended and joinedvvith the ends ofthe bottommember 4 to lform channel shaped housings or structures 12 in Which are j ournaled the axles l14 carrying Wheels v16, Which latter are adapted to travel on the track 18.

As shown clearly-in Fig. 1, the members 2 and 4 are spaced from eachother and the latter is formed With an integral lseat to rWhich is secured a motor 22 driving, through suitable reduction gearing kin a housing 23, a, shaft 24 upon which ismounteda lpinion 26 Which meshes with a pinion 28v ournaled on a kstub axle 30 supported in a bracket 32 carried bythe bottom member 4. The pinion 28 also meshes With aypinion 34 which is keyed on a shaft 86 journaled in .bearings 38 secured to the vertical members .6 of the frame, andthe ends of ithe shaft 36 are mounted in brackets 40 secured tothe vend .portions of housings 12 asclearly shown lin Figs. 1 and 5. Pinions 42 are 'keyed tothe ends of the shaft 36 and mesh with gears 44 Vsecured vto the axles y14. The brackets 40 are 4top andbttom members 2-and 4fby suitable fasteners 54, and an arcuatemember 56 secured to the closure member 52, as clearly The'channe'l shaped housings 12 are provided with a reinforcingrib'S and with integral tubulu'air lprojecting "portions .6() in "u'fhi'ch'buing members 62. are slidably mountted, each buing member having la Vreduced portion 64 surrounded by aspring 66 the re- "f'go a f'single` casting 'and composed of' the?y duced portion extending through kanzopening formed in the end 12 and carrying 4the lock -nuts 68 for an obvious purpose. Secured to the .endhousings 12 are brackets 70 to which casting as a single unit, the truck comprising.

a frame having spaced top and bottom members intermediate the ends, which top and bottom members merge into end portions which areV of inverted channel shapeto `define wheel housings. ythought of the'presentinvention, but it isapparent thatvariouschange's in the form vand proportions of the device may be made withinthe spirit of theinvention without depart'- ing from the scope of the .appended claims. It will also be apparent that the truck may be driven in either direction by a mere reversal of operation vof the motor 22. The drawings disclose a single truck, but it is apparent that within the spirit of the present invention, a truck may be provided which is formed of spaced casting such as heretofore described, which castingsmay be connected in Vany-suitable manner to provide a composite truck adapted to travel on spaced rails.

What is claimed is': l

1. In a device of the class described, acarriage comprising a truck frame havingseparate top and bottom members joined at'their ends, means intermediately connecting said' members, a motor carried by the bottom member, and Wheels j ournaled in the endportions of said frame;

2. In a device of the class described, acarriage comprising a truck frame having'separate top and bottom members united at their ends in integral channel structures, a motor mounted on the bottom member, wheels ournaled in said channel structures and an operative connection between said motor and wheels. v

In a'deviceof the class described, a carriage comprising a truck frame having separate top and bottom members joined at their ends by channel structures having'integral annular projections, and yielding bufling `members mounted in said projections.

4. A truck'comprising separate'top and bottom members spaced apart intermediate.Y

Y- their ends and joined at their ends to define channel shaped housings, axles yjournaledinV said housings, wheels mountedon the axles,

pinions mounted on the axles, a motor mountl This generallyY is the kdefining a motor receiving space, said lower housings at the ends of the unit.

and reduction gearing driven .by the motor for actuating the driving sha f y5. Avtruck of the kind describedcomprising separate top and bottom members joinedv at their ends to define channel shaped hous- .G'

ings and spaced apart intermediate their ends,

axles journaled in the housings, wheels mounted on the axles, pinions mounted onthe axles, brackets secured to the housings, a driving shaft having its ends supported by the brackets and carrying driving gears meshing with the before-mentioned ypinions, top, botl tom and front plates secured to the brackets and connected toprovide casings, a motory mounted on the bottom member, andgearing driven by said motor for actuating said driving'sh'aft. v

6. A truck frame comprisinga single cast'- ing having a portion thereof intermediateits ends formed into upper and lower members' member being'v cast with a motor supporting portion. j

7 A truck frame comprising a single unit having a portion thereof intermediate its ends formed into upper and lower members defining a motor receiving space, said lower mem-` ber being formed with a motorsupporting portion, and inverted channel shaped( wheel 95 8. A truck frame of the kind described c'om-v v prising a single cast unit having a portion thereof intermediate its endsformed'Y into -upper and lower membersdelining a motor receiving space and having the ends of said unit 10o yformed into inverted channel shaped wheel housings.

"members defining a motorreceiving space therebetween, said'V lower member having aV motor support cast therewith. Y

scribed comprising a single casting having a portion thereof intermediate its `ends formed -intoupper and lowerl members defining a' f Amotor receiving space therebetween, saidl'ow!V 115 er member having a motorsupport cast therewith, and 4vertical. portions connectingsaid -upper and lower members, the endsfof said casting beingY formed into invertedichannel, shaped wheel housings. Y f, 'Y l "-5120 11.!In'a truck of thekind described, aside frame comprising a truss casting the compres# sion and tension members of which are united f to define inverted channel-shaped wheel hous--J A125 ings at the ends of the frame. f

12.1 A side frame for cartrucks comprising l spaced top and bottom Vmembers integrally connected at their ends to define wheel receiving portions ofl inverte'd'channel fo'r1n.[` ll r.11o Vl0. A truck frameof the character dee 13. A'side frame forear trucks comprising a unitary casting having spaced portions intermediate the ends thereof Which are united at their ends to define Wheel supporting inverted channels.

In rWitness whereof I have hereunto setmy hand.r

^ JOHN M. ROHLFING. 

